Dispensing tool



J. A. GRAF DIsPENsING TooL Filed April so, 1942 june 29? l943.

lDSgPh A M 1 WQ# Patented June 29, 1943 l UNHTED STATES PATENT OFFICE DISPEN SING TOOL Joseph A. Graf, Findlay, Ohio Application April 30, 1942, Serial No. 441,144

1 Claim.

This invention relates to delivery from container.

This invention has utility when incorporated in liquid discharge especially of definite minor quantities from a reservoir. Special adaptation has values in connection with ink eradicator, cosmetic placing or removing, locating of perfume or of moisture as in places for promoting adhesion, and in the matter of certain testing operations wherein there is importance for delivering of minute measured quantities say as in hydrogen ion determinations.

Referring to the drawing:

Fig. 1 is a side elevation of an embodiment of the invention as enclosed in a container;

Fig. 2: is an elevation of the unit as clear of the container at inactive position therefor;

Fig. 3 is a view of the device of Fig. 2 oriented to active or dispensing position;

Fig. 4 is a View of the device of Fig. 3 in vertical section;

Fig. 5 is a section on the line V-V, Fig. 4, showing an impelling slug for the plunger stem;

Fig. 6 is a view, with parts broken away, of an embodiment independent of the separate container structure as shown in Fig. 1;

Fig. 7 is a fragmentary view of the device of Fig. 6 in dispensing or discharging position;

Fig. 8 is a view of an embodiment adapted for self-sealing; and

Fig. 9 is a view, with parts broken away, of the device of Fig. 8 in dispensing position.

Container or receptacle I is herein shown with screw neck 2 for mounting cap 3 as a closure, thereby to encase reservoir 4. Herein this reser- Voir 4 is normally in the container I to have port 5 in position to be sealed at the cap 3. This reservoir 4 has therein chamber 6 in which is located plunger having stem 'I with inner enlargement 8 and outer more minor bulb terminus 9, herein shown as of dimension to permit passage through the port 5. Supplemental gravity or propelling means in the form of slugs or cylinders I0, II, are shown herein, thereby permitting ready transit of these gravity operating means through the liquid I2 from gas or air portion I3. There is thus less tendency to impede the response to orienting the reservoir 4, and with this shifting for the stem I to protrude, there is, according to the length of this stem 1, a skin I4 of the contents I2 from the container chamber 6. This is adhering portion or film I4 on the exit of the plunger or stem 'I which may be skimmed olf in a definite relation. By pressure, the reservoir may be handled as a tool and in the directing thereof this outer terminus or bulbl 9 be progressed over the particular area for attention, say if the charge be an ink eradicator, to remove a line which it is desired not be inscribed. If the matter be otherwise used, say for coating of the finger nails or removing of such coating, similar unwriting or directing course may be adopted, or for attention given the eyebrows or lips. Again if the matter be for the attention to a wound, there may be disinfectant, such as mercurochrome or other agent. As the particular use is completed, the reservoir chamber device 4 may be placed within the container I and the cap 3 brought to sealing position.

Instead of the cap 3 being adapted to engage the container I, such may have direct thread connection I5 (Figs. 6, 7) with reservoir I6 having discharge port Il with plunger I8 therefrom. The plunger I8 is shown as having enlargement I9 within the chamber I6 and operating slug or cylinder 20 therefor.

As to the extent of separate sealing means, in the event the material handled not have a tendency to evaporate and thereby gum operation, there may be reservoir 2I having port 22 with plunger 23 (Figs. 8, 9) having bulbous ends 24, 25. These ends may be such as to preclude the plunger clearing the port in either direction.

In practice hereunder, the device may be a single service device to be charged as sealed. In other experience there may be completion of the device and charging thereof say byhypodermic needle or a refined terminus of the eye dropper type, more particularly if the plunger be one to clear the ports 5, Il, as distinguished from the port 22. In practice, the ports 5, I'I, 22, may be sufficiently small asto the viscosity ofthe charge that there is not tendency to drip in the normal handling and orienting. This may be termed a surface tension sealing.

The projection of the plunger in practice tends to carry a definite drop or drop fraction, according to the port and stem diameter and the extent of projection. Importance thus resides in the use of this dispensing tool incident to the critical quantities, say as wetvanalyses in quantitative chemistry operation.

What is claimed and it is desired to secure by Letters Patent is:

A dispensing tool embodying a reservoir having a terminal port bounded by a seat approximately flush with the exterior of the reservoir, and a plunger having an extension therefrom provided with an outer bulbous end, said plunger normally coacting with the port against ow of liquid past the seat, said extension protruding through the port and differing in diameter from the port to a degree to prevent free ow of the liquid but to carry a measured amount of liquid distributed along the length of the extension as a lm, said bulbous end being responsive to external pressure for retraction of the extension to slide past the 'seat into the reservoir, thereby to be exposed to the contents of the reservoir to pick up thereon a measured quantity and then movable to carry said measured quantity of content therewith adapted to be wiped therefrom in a succeeding retraction.

JOSEPH A.. GRAF. 

